MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It functions as a link farm, with numerous embedded URLs pointing to external sites. Several of these URLs are hosted on compromised CMS platforms, indicating a potential distribution or phishing vector. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, providing no direct user-facing content but likely serving as a container for the malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://akilanews.com/ckfinder/userfiles/files/37964268688.pdf
- https://www.hkfew.org.hk/ckfinder/userfiles/files/xatidawisuf.pdf
- http://catherine-massage.com/ckfinder/userfiles/files/84275920286.pdf
- http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/16136f22c03af8---99963402919.pdf
- http://skkl.cn/filespath/files/20210906101345.pdf
- http://aytekinpolatel.com/image/files/ronapuvinekewov.pdf
- https://doellefjelde-mussemarked.dk/images/newsmail/file/1650352364.pdf
- http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16139ca55d6c70---sixenod.pdf
- https://architektor.ru/uploads/file/wikemosoxarej.pdf
- https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/d7f4da8fbcf2dbe39f704b34674a0d34/jobunuwovezeguraz.pdf
- http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131a16803868---57471237525.pdf
- http://irfanmakina.com/depo/sayfaresim/file/robax.pdf
- http://zhizhencn.com/filespath/files/20210901065336.pdf
- http://sun-tes.ru/files/file/xotozutu.pdf
- http://quaisetoiles.fr/img_pages/file/55896721710.pdf
- https://www.vita-organic.eu/admin/ckfinder/userfiles/files/metiju.pdf
- https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/6ecbf392dfb65866ec1a668efd9f7a67/bobulajanipetoxagixixames.pdf
- http://air-ned.com/uploads/files/1988786509.pdf
- http://kanoonkaraj.ir/dbmanager/filebank/htmlgallery/file///43903627437.pdf
- http://pusancard.com/userData/board/file/58569841947.pdf
- https://medicabg.com/uploads/wysiwyg/files/71969769881.pdf
- http://penzionnakrizankach.cz/ckfinder/userfiles/files/jiwibatid.pdf
- http://banquat.com/userfiles/files/redovaxapu.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=my+hero+academia+anime+season+1
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e141.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE141 | 16792 bytes |
font_01_sfnt_off0000f958.bin9d2a76d41ec38a53d115671d5a685cc65528206b0b7f262cc133a8e9c2b5baff |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF958 | 10652 bytes |
font_02_sfnt_off00011196.bin3f08224b1ecb8863cbce28d9a188061ad47bec514ba385ac8f8d97cdca0f355f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11196 | 21428 bytes |
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